Related Experiment Video
Updated: Sep 14, 2025
10:16
Generating Genetically Modified Plasmodium berghei Sporozoites
Published on: May 5, 2023
1.4K
Host sphingolipids support Plasmodium berghei liver stage development.
Erin A Schroeder1, Isabel C Colón2, Porter E Petruzziello2
1Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA.
Mbio
|July 21, 2025
Summary
This study reveals that host sphingolipids are crucial for Plasmodium liver stage development and invasion. Targeting host lipid metabolism could offer a novel multistage antimalarial therapeutic strategy.
Area of Science:
- * Molecular parasitology and host-pathogen interactions.
- * Cell biology and lipid metabolism in infectious diseases.
Background:
- * Plasmodium parasites reside in a parasitophorous vacuole (PV) during the liver stage, limiting nutrient exchange.
- * Understanding nutrient acquisition mechanisms is crucial for developing new antimalarial therapies.
- * The role of host lipids, particularly sphingolipids, in Plasmodium liver stage development is poorly understood.
Purpose of the Study:
- * To investigate the role of host sphingolipids in Plasmodium berghei liver stage development and invasion.
- * To identify host cell mechanisms and proteins involved in sphingolipid transport to the PV.
- * To explore potential therapeutic targets within host lipid metabolism for malaria control.
Main Methods:
- * Utilized exogenous C16-ceramide and sphingomyelin to assess their impact on parasite development and invasion.
- * Employed live microscopy with NBD-labeled sphingolipids to track lipid transport into the PV.
- * Investigated the role of the host ceramide transporter (CERT1) and host salvage pathway proteins (CERS3, SPHK1) through genetic disruption and chemical approaches.
Main Results:
- * Exogenous C16-ceramide enhanced Plasmodium berghei liver stage development and nuclear replication.
- * Host cell sphingomyelin was essential for parasite invasion, and exogenous lipids were actively scavenged into the PV.
- * CERT1 was enriched at the PV, and its disruption reduced parasite load and ceramide trafficking; CERS3 and SPHK1 depletion affected PV size and infection rate.
Conclusions:
- * Host sphingolipids play distinct and critical roles in Plasmodium liver stage development and invasion.
- * Host proteins like CERT1, CERS3, and SPHK1 are involved in sphingolipid acquisition and parasite viability.
- * Targeting host sphingolipid metabolism presents a promising strategy for developing novel, multistage antimalarial therapies.
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